8005249484809 has 2 divisors, whose sum is σ = 8005249484810. Its totient is φ = 8005249484808.

The previous prime is 8005249484779. The next prime is 8005249484851. The reversal of 8005249484809 is 9084849425008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6261740508409 + 1743508976400 = 2502347^2 + 1320420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8005249484809 is a prime.

It is not a weakly prime, because it can be changed into another prime (8005249484209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4002624742404 + 4002624742405.

It is an arithmetic number, because the mean of its divisors is an integer number (4002624742405).

Almost surely, 2^{8005249484809} is an apocalyptic number.

It is an amenable number.

8005249484809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8005249484809 is an equidigital number, since it uses as much as digits as its factorization.

8005249484809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26542080, while the sum is 61.

The spelling of 8005249484809 in words is "eight trillion, five billion, two hundred forty-nine million, four hundred eighty-four thousand, eight hundred nine".